linux-kernel - Re: [PATCH v11 3/4] firmware: ti_sci: Introduce Power Management Ops

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Message-ID: <20240830043529.a2lsvazchc3onrzi@lcpd911>
Date: Fri, 30 Aug 2024 10:05:29 +0530
From: Dhruva Gole <d-gole@...com>
To: Markus Schneider-Pargmann <msp@...libre.com>
CC: Nishanth Menon <nm@...com>, Tero Kristo <kristo@...nel.org>,
        Santosh
 Shilimkar <ssantosh@...nel.org>,
        Vibhore Vardhan <vibhore@...com>, Kevin
 Hilman <khilman@...libre.com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        Akashdeep Kaur <a-kaur@...com>
Subject: Re: [PATCH v11 3/4] firmware: ti_sci: Introduce Power Management Ops

On Aug 29, 2024 at 22:16:04 +0200, Markus Schneider-Pargmann wrote:
> From: Dave Gerlach <d-gerlach@...com>
> 
> Introduce power management ops supported by the TISCI
> Low Power Mode API [1].
> 
> 1) TISCI_MSG_LPM_WAKE_REASON
> Get which wake up source woke the SoC from Low Power Mode.
> The wake up source IDs will be common for all K3 platforms.
> 
> 2) TISCI_MSG_LPM_SET_DEVICE_CONSTRAINT
> Set LPM constraint on behalf of a device. By setting a constraint, the
> device ensures that it will not be powered off or reset in the selected
> mode.
> 
> 3) TISCI_MSG_LPM_SET_LATENCY_CONSTRAINT
> Set LPM resume latency constraint. By setting a constraint, the host
> ensures that the resume time from selected mode will be less than the
> constraint value.
> 
> [1] https://software-dl.ti.com/tisci/esd/latest/2_tisci_msgs/pm/lpm.html
> 
> Signed-off-by: Dave Gerlach <d-gerlach@...com>
> [g-vlaev@...com: LPM_WAKE_REASON and IO_ISOLATION support]
> Signed-off-by: Georgi Vlaev <g-vlaev@...com>
> [a-kaur@...com: SET_DEVICE_CONSTRAINT support]
> Signed-off-by: Akashdeep Kaur <a-kaur@...com>
> [vibhore@...com: SET_LATENCY_CONSTRAINT support]
> Signed-off-by: Vibhore Vardhan <vibhore@...com>
> Signed-off-by: Kevin Hilman <khilman@...libre.com>
> Reviewed-by: Akashdeep Kaur <a-kaur@...com>
> Tested-by: Dhruva Gole <d-gole@...com>
> Signed-off-by: Markus Schneider-Pargmann <msp@...libre.com>
> ---
>  drivers/firmware/ti_sci.c              | 198 +++++++++++++++++++++++++
>  drivers/firmware/ti_sci.h              |  76 ++++++++++
>  include/linux/soc/ti/ti_sci_protocol.h |  26 ++++
>  3 files changed, 300 insertions(+)
> 

<removing older email addresses from CC>

LGTM,
Acked-by: Dhruva Gole <d-gole@...com>

-- 
Best regards,
Dhruva Gole
Texas Instruments Incorporated